Bertha Rogers (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bertha Rogers" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

1web.archive.org

1^st place

1^st place

low place

low place

ghkco.com

«The GHK Company» , Corporate portal.

web.archive.org

«The World's Second Deepest Hole» , Energy Issues, December, 2005.